Mechanical Properties of Manufactured-Sand Concrete after High Temperatures

Zhengfa Chen1, Hehua Zhu1, Zhiguo Yan*, 1, Gaojv Peng1, 2
1 School of Civil Engineering, Tongji University, Shanghai 200092, China
2 School of Architecture Engineering, Shan-dong University of Technology, Zibo 255049, China

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© 2015 Chen et al;

open-access license: This is an open access article distributed under the terms of the Creative Commons Attribution 4.0 International Public License (CC-BY 4.0), a copy of which is available at: This license permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.


In this paper, to study mechanical properties of manufactured-sand concrete after high temperatures, experiments on the residual strength of manufactured-sand concrete were carried out under high temperatures in which raw materials performances and concrete mixture proportion were considered. The mechanism of elevated temperatures on residual strength was theoretically discussed, and the calculation formula of residual strength was given. The results indicated that with the increasing of temperature, the mass loss was small while the reducing of strength and the elastic modulus of manufactured-sand concrete were significantly.

Keywords: Concrete, durability, high temperature, manufactured-sand, strength.